Someone PM'ed me last week about what the part number is for the Purolator paper air filter that I use in the Mopar round air assembly. I accidentally deleted your PM, and couldn't remember who asked the question. The answer though is:

Purolator Premium Plus part# A50831

It is a perfect replacement fit for the paper filter (which happens to also be made by Purolator) that comes with the Mopar assembly when you buy it new.

Hope you see this post. Sorry about deleting your PM.